Die mount



-5, 1933- E. J. MCILVRIED El AL 1,938,190

DI E MOUNT Original Filed July 26, 1930 w n Ill x m llllllmll a 1 aul" H I In lylll] Arne/v5 rs.

Patented Dec. 5, 1933 UNITE DIE MOUNT Edwin J. McIlvried, Akron, and Jesse c. Bittman,

'Cuyahoga Falls, Ohio, assignors to The Vaughn Machinery Company, Cuyaho'gaFalls, Ohio, a

corporation of Ohio Original application July 26, 1930, Serial No.

470,892. Divided and this application Septem ber 11, 1931. Serial No. 562,329

3 Claims. (Cl. 205-) This invention relates generally to apparatus for the working of material in strand or strip form, and more particularly our invention relates to an improved form of wire drawing machine 5 embodying novel mounting means for the dies.

This application is filed as a division of our original co-pending application, Serial No. 470,892, filed July 26, 1930.

As its principal object our invention aims to provide improved apparatus of the kind referred to, wherein novel means is employed for removably retaining the dies in place. Another object of our invention is to provide a novel form of die mount, wherein a die positioned in a recess, is retained in that recess by a movable member extending into the path of disengaging movement of the die. I

A further object of'this'invention is to provide a novel die mount having a recess adapted 20' to contain a die, and a second recess arranged with its axis oblique tothe axis of the die recess,

the second recess having a member movably mounted therein and adapted to project into the path of disengaging movement of the die.

constructed according to our invention, and

Fig. 3 is a sectional view taken transversely of the die mount, as indicated by line 3-3 of Fig. 2.

In the drawing, to which'detailed reference will now be made, we have shown ourinvention embodied in wire drawing apparatus which is suit able for high speed operation. It should be '40' understood, however, that our invention-may,

also be used in connection with various kinds of machinery for the drawing or working of material supplied thereto in strand or strip form. In the apparatus which we have illustrated,

45. we have shown strand working machinery 10, to which material to be worked is supplied in strand or strip form, and from which the strand of worked material maybe delivered to suitable spooling means (not shown). The strand work- :Eoi ing'means housed within the casing 12, embodies a series of suitable dies 13, shown in this 'in- .stance as being cylindrical in shape, which are supported upon the die bracket or shelf 14', and

through which the strand is drawn by means of the rotatable drawing capstans 15 and 16. On

Other objects and advantages of the invention.

Fig. 2 is a side elevational view of a die mount the side of the die bracket opposite that on which the drawing capstans 15 and 16 are arranged, we provide an idler capstan 17 having a plurality of flanged and independently rotatable idler sheaves 18 around which the strand passes. The drawing capstans 15 and 16 are arranged in axial alignment with each other, and by suitable driving means (not shown) are adapted-to be rotated in the same direction'but at different speeds.

ments of annular drums of different diameters. As is well understood in this art, the varying drum diameters of these capstans, and the provision for different speeds of rotation thereof, take care 7 r of the increase in the length of the strand, which results from its passage through the dies.

For reasons obvious to'those skilled in this art it is desirable to have the dies 13're1novably mounted in the die bracket '14. Accordingly, we 7 provide the latter with suitably proportioned recesses 19, which communicate with, and are located at the bottom of the guide slots 20 formed between the pairs of guide fingers 21. The dies 13 are seated in the recesses 19, as shown in Figs. 2 and 3, and to retain the dies within their'respective recesses, so as to prevent accidental removal thereof during the operation of the machine, we provide a hollow retaining plunger 22 adjacent each die. Theseplungers are reciprocably mounted in recesses provided in the die bracket adjacent the recesses provided for the dies,-the plunger recesses-being arranged so that the axes thereof intersect the axes of the die recesses at approximately right angles. For retaining the plungers in their respective recesses so that they may have limited reciprccable movement, we employ suitable stops, such as-the screws 23which are mounted in the die bracket and extend into the slots 24 formed in the plungers 5 Compression springs 25 normally press the plungers outwardly axially of their recesses so that they extend partly across the exposed faces of the dies, or in other words, so that they project into the path of disengaging movement of the dies. When a. die is to be inserted into its recess, or removed therefrom, the corresponding plunger 22 is pressed downwardly into its recess against the action of the spring 25, so as to permit movement of the die axially of its recess. 7

To facilitate insertion and removal of the dies from their recesses, and also. to provide addi- I tionalclearance for the strand being worked, we prefer to construct the plungers 22 sothat their exposed end surfaces are'concave, asindicated '11' The drawing capstans are of well known 5 construction, being made up of step-like arrange in Figs. 2 and 3 of the drawing. The radii of curvature for these concave portions are prefer- V ably substantially the same as the radii of curvature of the outer surf aces oi the dies.

During the procedure of preparing the wire drawing machine for operation, the dies are strung upon a strand of material in proper order. This strand, with the dies strung thereon, .is looped around the drawing capstan and the idler capstan, so as to extend through the guide slots 20. To position one of the dies in its recess, the operator simply depresses the retaining plunger for that die a sufficient amount to allow the die to be moved axially into its recess. This operation can be accomplished most readily by simply using the die itself as a means for depressing the plunger. Since the upper end of the plunger is concave it tends to center the die, and as soon as the plunger has been depressed suiiiciently the die can be slid out of the concavity and into the die recess. Movement of the die into its recess I releases the plunger, whereupon the spring moves the plunger outwardly of its recess and retains the same in the path of disengaging movement of the die.

It will now be readily seen that we have provided an improved form of die mount embodying novel means for removably retaining the dies in place. This retaining means is of extremely simple construction, and although the same can be very easily operated to remove or insert the dies without the need of wrenches or other tools, the dies will be efiiciently retained in place against accidental disengagement.

While we have illustrated and described the apparatus of our invention in a detailedmanner, it should'be understood, however, that we do not intend to limit ourselves to the precise details and arrangements of parts shown and described, but regard our invention as including such changes and modifications as do not involve a departure from the spirit of the invention and the scope of the appended claims.

Having thus described our invention, we claim:

1. In apparatus of the character described the combination of a support having a plurality of recesses therein, a die removably mounted in one of said recesses, said die having a convex outer surface, a plunger slidably mounted in another of said recesses for movement into and out of the path of disengaging movement of said die, said. plunger having a recess in the upper end thereoi adapted to receive the convex portion of said die and to center the die with respect to the die recess.

2. In apparatus of the character described the combination of a support having a plurality of recesses therein, a die removably mounted in one of said recesses, and a plunger slidably mounted in another of said recesses with a portion thereot adapted to project into the path of disengaging movement of said die, said projecting portion having a recess in the end thereof adapted to receive said die and center the same with respect to the die recess, the surface defining the last mentioned recess being of substantially the same contour as the external surface of said die.

3. In apparatus of the character described, the

combination of a support having a die recess therein and a second recess disposed with its axis intersecting the axis of the die recess at substantially right angles, a die removably seated 'in said die recess, a die retaining plunger slidable in the second recess and adapted to be moved in- 1.05

wardly of such recess to permit insertion or removal of the die and to be extended from its recess into the path of disengaging movement of the 7 die to prevent accidental removal of .the latter,

spring means in said second recess for normally 1,10

holding said plunger in its extended position, and means for limiting the outward movement of said plunger under the action of said spring means. 

